arpa/inet.h - definitions for internet operations
The in_port_t and in_addr_t types shall be defined as described in <netinet/in.h>.
The in_addr structure shall be defined as described in <netinet/in.h>.
The INET_ADDRSTRLEN [IP6] and INET6_ADDRSTRLEN macros shall be defined as described in <netinet/in.h>.
The following shall either be declared as functions, defined as macros, or both. If functions are declared, function prototypes shall be provided.uint32_t htonl(uint32_t); uint16_t htons(uint16_t); uint32_t ntohl(uint32_t); uint16_t ntohs(uint16_t);
The uint32_t and uint16_t types shall be defined as described in <inttypes.h>.
The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.in_addr_t inet_addr(const char *); char *inet_ntoa(struct in_addr); const char *inet_ntop(int, const void *restrict, char *restrict, socklen_t); int inet_pton(int, const char *restrict, void *restrict);
Inclusion of the <arpa/inet.h> header may also make visible all symbols from <netinet/in.h> and <inttypes.h>.
<netinet/in.h>, <inttypes.h>, the System Interfaces volume of IEEE Std 1003.1-2001, htonl(), inet_addr()
First released in Issue 6. Derived from the XNS, Issue 5.2 specification.
The restrict keyword is added to the prototypes for inet_ntop() and inet_pton().